CVE-2026-116172
vLLM from 0.22.0 before 0.24.0 contains an improper input validation vulnerability in the Rust gRPC converter that allows remote attackers to bypass max_logprobs limits via CandidateTokens.top_n. Attackers can send Generate or GenerateStream requests with oversized or integer-wrapping top_n values to trigger torch.topk failures that terminate EngineCore.
- Score
- CVSS 4.0 8.2 High
- Status
- Analyzed - disclosure@vulncheck.com
- Published
- 2026-10-25
- Last modified
- 2026-10-28
- Weaknesses
- CWE-20
Affected products
References
- https://github.com/vllm-project/vllm/security/advisories/GHSA-rwfw-xvg3-3937
- https://www.vulncheck.com/advisories/vllm-0.22.0-before-0.24.0-dos-via-rust-grpc-candidatetokens-top-n
